Dump gate



Aug. 17,1926. 1,596,122

. J. B. SEAVERNS DUMP GATE Original Filed June 5. 1922 Patented Aug. 17, 1925.

tlhiiTEE STATES JAMES B. SEAVERNS, OF CHICAGO, ILLINOIS.

DUMP GATE.

Oiriginal application filed June 5,

1922, Serial No. 566,004. Divided and this application filed. May 14,

1925. Serial No. 30,151.

The present invention relates to dump gates.

More particularly the present invention relates to a construction of dump gates applicable to bins for containing stone, coal, sand, gravel, ashes, or the like. It is de sired in practice to store large quantities of such weight-y materials in bins and to open and close the bin gates for controlling the discharge by gravity of said weighty materials. In I practice this weight often amounts to hundreds of pounds per square foot and a special gate construction is required to open and close said gates when they are under these heavy pressures.

The present application is a division of an application bearing Serial No. 566,004, filed by the prese t applicant on June 5, 1922p An object of the present invention is to provide a gate construction in which a powerful leverage action may be obtained "for operating same.

A further object is to provide dump gates which are sturdy in construction, efficient as closure members, and which may be readily operated in a controlled manner to allow the passage of dumpable material at the desired rate.

A further object is to provide dump gates suitable for heavy duty and adapted to cut oif the flow of dumpable material when desired,

Further objects will appear hereinafter,

Referring to the drawings- Figure 1 is a view in side elevation of a bin having applied thereto dump gates embodying the principles of the present invention;

Figure 2 is a sectional view taken along the plane marked by the line 2-2 of Figure 1;

Figure 3 is an end elevation of salient features of the construction shown in Figure 1;

Figure 4 illustrates a slightly modified construction; and

Figure 5 is a sectional view talien on the plane marked by the line 5-5 of Figure 4.

The numeral 10 indicates a bin supported on uprights 10'10, said bin having the hopper 11. The lower extremity of the hopper may be. provided with a chute 12 through which dumpable material may pass downwardly from the bin 10. The bottom of the chute 12 is provided with a pair of pivoted gates 13 and 14, which may be of the type commonly known as clam shell, said gates being capable of pivotal motion about the axes 1515, which axes may lie in substantially parallel lines. When said gates 13 and 14 are moved into proximity to one another, they form a closure for the bottom of the chute 12, and when said gates are moved apart they provide between them aLspace through which the dumpable ma-' terial may pass, the gates 13 and 14 being movable'approximately to the dotted line positions 13 and 14, respectively.

The gates 13 and 14 are adapted to be moved in unison and have common control means. According to the construction shown in Figures 1, 2rand 3,'said controlling means consists of a pair of operating arms 16 and 17 substantially symmetrically placed relative to said gates, of which the operating arm 16 has pivotal connection with the gate 13 and operating arm 17 has pivotal connection with gate 14. Operating arm 16 is connected to gate 13 atthe point 16, while operating arm 17 is connected to gate 14 at the point 17, said points 16 and 17 being located near to adjacent edges of gates 13 and 14. Said operating arms 16 and 17 also connect with the operating lever 18 which is pivoted about the vertical axis 19, said axis 19 being preferably located intermediate of the arms 16 and 17. The lever 18 may be mounted upon a bracket 20, which may be supported upon any convenient structure, as, for instance, upon the uprights 10' 10, and is provided with a handle 21, by means of which a strong leverage action may be applied to the operating arms 16 and 17 for the purpose of operating the gates 13 and 14.

According to the structure illustrated in Figures4 and 5, the gate 14 is provided with an operating arm 22 having pivotal connection therewith at the point 22, substantially midway of the length of said gate, while the gate 13 is provided with the bifurcated oper ating arm 23 having the two bifurcations 24-24, which have pivotal connection with the gate 13 at the points 24-24', located at the opposite ends of said gate 13, Points 22 and 24-24 should be located adjacent v to the meeting edges of gates 13 and 14.

The arms 22 and 23 have a pivotal connection With the lever 25, which may be pivotally mounted on the bracket 26, the point 27 of pivotal connection of said lever being placed intermediate 01 the connections be tween lever 25 and operating arms 22 and 23. The lever 25 may be provided \vith'a handle 28- Whereby saidlever and consequently the arms 22 and 23 and gates 13 and let may be e'tlectively operated.

By reason of the fact that the operating arms for the gates 13 and 1a are connected to said gates attpoints adjacent .to their meeting edges, the forces are applied at the proper points to best overcome the resistance of the dumpable material. Due to the Weight of said material, control of bottom doors is often difficult and distortion of such doors sometimes results. According to the construction of the present invention, however, avminimum of distortion is produced and the doors may be effectually controlled.

As Will be-noted from the drawings, and particularly Figures 1 and 4, the 'tWo opposite bottom edges of the chute 12 are curved and the dumping gates 13 and 14: have bottoms conforming to said curved lower edges. As indicated particularly in Figure 1, the abutting edges of the gates 13 and 1 1 follow the bottom edges of the chute 12 in their opening and closing movements. By reason of this construction, the dump able material-is easily controllable so that the flow through said chute 12 may be controlled to a nicety.

Thou h certain embodiments of the oresent invention have been described in detail many modifications Will occur to those skilled in the art. It is intended to cover all such modifications that fall ithin the scope of the appended claim.

What is claimed is- A hopper having side Walls, a pair of pivotally mounted gates having cooperating edges, operating arms for said gates, one of said arms beingpivotally connected to one of said gates at one side of said hopper, the other of other of said gates at the other side of said hopper, and a common operating lever for said arms, said operating lever being pivotally mounted between the points of attachment of said arms With said lever.

said arms being connected to the Signed at Chicago, Illinois, this 11th day of May, 1925.

JAMES B SEAVERNS. 

